/*-
 * ============LICENSE_START=======================================================
 * SDC
 * ================================================================================
 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
 * ================================================================================
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ============LICENSE_END=========================================================
 */
package org.openecomp.sdc.exception;

import java.util.Arrays;
import java.util.Formatter;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.openecomp.sdc.common.log.enums.EcompLoggerErrorCode;
import org.openecomp.sdc.common.log.wrappers.Logger;
import org.openecomp.sdc.common.util.GeneralUtility;

public abstract class AbstractSdncException {

    private String messageId;
    private String text;
    private final String ecompRequestId;
    private String[] variables;
    private static Logger log = Logger.getLogger(AbstractSdncException.class.getName());
    private final static Pattern ERROR_PARAM_PATTERN = Pattern.compile("%\\d");

    public AbstractSdncException() {
        this.ecompRequestId = GeneralUtility.getEcompRequestId();
    }

    public AbstractSdncException(String messageId, String text, String[] variables) {
        this();
        this.messageId = messageId;
        this.text = text;
        this.variables = validateParameters(messageId, text, variables);
    }

    private String[] validateParameters(String messageId, String text, String[] variables) {
        String[] res = null;
        Matcher m = ERROR_PARAM_PATTERN.matcher(text);
        int expectedParamsNum = 0;
        while (m.find()) {
            expectedParamsNum += 1;
        }
        int actualParamsNum = (variables != null) ? variables.length : 0;
        if (actualParamsNum < expectedParamsNum) {
            log.warn(EcompLoggerErrorCode.UNKNOWN_ERROR, "", "",
                "Received less parameters than expected for error with messageId {}, expected: {}, actual: {}. Missing parameters are padded with null values.",
                messageId, expectedParamsNum, actualParamsNum);
        } else if (actualParamsNum > expectedParamsNum) {
            log.warn(EcompLoggerErrorCode.UNKNOWN_ERROR, "", "", "",
                "Received more parameters than expected for error with messageId {}, expected: {}, actual: {}. Extra parameters are ignored.",
                messageId, expectedParamsNum, actualParamsNum);
        }
        if (variables != null) {
            res = Arrays.copyOf(variables, expectedParamsNum);
        }
        return res;
    }

    public String getMessageId() {
        return messageId;
    }

    public String getText() {
        return text;
    }

    public String getEcompRequestId() {
        return ecompRequestId;
    }

    public String[] getVariables() {
        return variables;
    }

    public void setMessageId(String messageId) {
        this.messageId = messageId;
    }

    public void setText(String text) {
        this.text = text;
    }

    public void setVariables(String[] variables) {
        this.variables = variables;
    }

    public String getFormattedErrorMessage() {
        String res;
        if (variables != null && variables.length > 0) {
            Formatter formatter = new Formatter();
            try {
                res = formatter.format(this.text.replaceAll("%\\d", "%s"), (Object[]) this.variables).toString();
            } finally {
                formatter.close();
            }
        } else {
            res = this.text;
        }
        return res;
    }
}
